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| 2W1-2 Phase Excitation/Micro-step Support SLA7042M/SLA7044M 2-Phase Stepper Motor Unipolar Driver ICs sAbsolute Maximum Ratings Parameter Motor supply voltage FET Drain-Source voltage Control supply voltage Input voltage Output current Power dissipation Channel temperature Storage temperature Symbol VCC VDSS VDD VIN IO PD Tch Tstg Ratings SLA7042M 46 100 7 -0.5 to VDD+0.5 1.2 4.5 (Without Heatsink) +150 -40 to +150 3 SLA7044M Units V V V V A W C C sElectrical Characteristics Ratings Parameter Control supply current Control supply voltage Input Terminals voltage DATA, CLOCK Input hysteresis and voltage STROBE Input current Input voltage Input current Symbol min IDD Conditions VDD VIH Conditions VIL Conditions VH Conditions II Conditions VREF Conditions VDISABLE Conditions IREF Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions VDS Conditions VDSS Conditions IDSS Conditions VSD Conditions TOFF Conditions TOFF Conditions TOFF Conditions Tr Conditions Tstg Conditions Tf Conditions tsDAT SLA7042M typ VDD=5.5V 5 VDD=5V max 7 5.5 5 1.5 min SLA7044M typ VDD=5.5V 5 VDD=5V Units max 7 5.5 5 1.5 mA V V 4.5 3.5 0 4.5 3.5 0 VDD=5V 1 VDD=5V VDD=5V, VI=0 or 5V 0.4 VDD=5V VDD-1 VDD=5V 1 2.5 VDD 1 0.4 VDD=5V 1 VDD=5V VDD=5V, VI=0 or 5V V 1 2.5 A VDD=5V VDD-1 VDD=5V 1 VDD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 0.8 1.4 ID=3A, VDD=4.75V 100 IDSS=4mA, VDD=5V 4 4 VDSS=100V, VDD=5V 1.2 2.3 ID=3A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 VDD=5V, ID=1A 0.7 VDD=5V, ID=1A 0.1 VDD=5V, ID=1A 75 Inter-clock 75 Inter-clock 150 VDD REF terminal V Reference voltage selection output voltage VDD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 ID=1.2A, VDD=4.75V 100 IDSS=4mA, VDD=5V VDSS=100V, VDD=5V ID=1.2A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 VDD=5V, ID=1A 0.7 VDD=5V, ID=1A 0.1 VDD=5V, ID=1A 75 Inter-clock 75 Inter-clock 150 100 100 Strobe=L from clock 100 100 A DC characteristics % FET ON voltage FET Drain-Source voltage FET drain leakage current FET diode forward voltage V V mA V Chopper off time s AC characteristics Switching time s Data setup time "A" Data hold time "B" Data pulse time "C" Clock pulse width "D" Stabilization time before strobe "E" Strobe pulse H width "F" Conditions thDAT Conditions twDAT Conditions twhCLK ns 100 100 Strobe=L from clock Conditions tpsSTB Conditions twhSTB Conditions 44 SLA7042M/SLA7044M 2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support) SLA7042M/SLA7044M sInternal Block Diagram OUT A OUT A VDD A VDD B OUT B OUT B Rs B OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (2 s) Reference voltage Vref b a c 0% 0 0 0 20% 0 1 0 40% 1 0 0 55.5% 1 1 0 71.4% 0 0 1 83% 0 1 1 91% 1 0 1 100% 1 1 1 Reference voltage c b a Vref 0 0 0 0% 0 0 1 20% 0 1 0 40% 0 1 1 55.5% 1 0 0 71.4% 1 0 1 83% 1 1 0 91% 1 1 1 100% OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (2 s) PWM PWM Phase COMP Reset Ph. Phase Latch a b c c Latch b a Ph. Reset COMP Reset Shift register Ph. a b c c Shift register b a Ph. Reset Enable Enable CLOCK A CLOCK B Rs A GND A STROBE A STROBE B DATA A sOutput Current Formula IO = K VREF * 3 RS K: Reference voltage setting rate by serial signal (See the internal block diagram) sDiagram of Standard External Circuit VCC 5V 4 VDDA ENABLE VREF 3 14 R2 C1 GND A GND B 7 12 C1 : 500 to 10000pF RS A 9 RS REF A REF B 15 1 8 11 18 VDDB OUT A OUT A OUT B OUT B CLOCK A 5 CLOCK B R1 DATA B SLA7042M SLA7044M 16 2 13 STROBE A STROBE B DATA A 6 DATA B 17 RS B 10 RS GND B Ref A Ref B SLA7042M/SLA7044M 45 2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support) SLA7042M/SLA7044M sExternal Dimensions 3.20.15 310.2 24.40.2 16.40.2 (Unit: mm) 3.20.15x3.8 4.80.2 1.70.1 9.90.2 160.2 130.2 Lot No. (3) 6.70.5 0.55 +0.2 -0.1 1 -0.1 17xP1.680.4=28.561 +0.2 0.65 -0.1 +0.2 1 -0.1 17xP1.680.4=28.561 +0.2 0.55 -0.1 40.7 +0.2 2.20.1 60.6 7.50.6 31.30.2 1 2 3 * * * * * * * * * * * * 16 17 18 1 2 3 * * * * * * * * * * * * 16 17 18 Forming No. No.871 Forming No. No.872 sSerial Data Pattern OUT excitation (MODE ) Phase a b c 0 OUT excitation (MODE ) Phase a b c CLOCK STROBE MODE0 (0%) MODE1 (20%) MODE2 (40%) MODE3 (55.5%) MODE4 (71.4%) MODE5 (83%) MODE6 (91%) MODE7 (100%) 0 0 0 0 0 0 0 0 0 See page 48 for details of PG001M serial signal generator IC for SLA7042M and SLA7044M. DATA 0 0 0 0 0 0 0 0 0 0 Successively output this serial data and set any current. Then, determine the step time of the reference voltage Vref at STROBE signal intervals. 46 SLA7042M/SLA7044M 1.6 0.6 R-End 9.7 -0.1 +0.2 0.65 -0.1 +0.2 3 0.6 0.6 4.6 Part No. 2.450.2 2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support) SLA7042M/SLA7044M sCurrent Vector Locus (One step of stepper motor normalized to 90 degrees) A 100 To rotate the motor, enter serial data as follows: 2W1-2 phase excitation : Vector 123456789 ... W1-2 phase excitation : Vector 13579.... 1-2 phase excitation : Vector 159 2-2 phase excitation : Vector 5 or 10 Combined Current A Current B vector 1 2 3 100% 100% 91% 83% 71.4% 55.5% 40% 20% 0% 100% 0% 20% 40% 55.5% 71.4% 83% 91% 100% 100% 100% 10 1 2 3 4 5 6 7 4 5 6 7 8 20 8 9 10 B 0 A 20 40 55.5 9 B 71.4 83 91 100 sSerial Data Sequence Example (2W 1-2 Phase Excitation for CW) Sequence DATA-A MODE DATA-B MODE 0 4 4 1 3 5 2 2 6 3 1 7 4 0 7 5 1 7 6 2 6 7 3 5 8 4 4 9 5 3 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 6 2 7 1 7 0 7 1 6 2 5 3 4 4 3 5 2 6 1 7 0 7 1 7 2 6 3 5 4 4 5 3 6 2 7 1 7 0 7 1 6 2 5 3 0 4 4 A malfunction may occur just after the power (VDD) is turned on because the internal logic is unstable. Therefore, set the RESET state (REF terminal voltage: VDD-1V to VDD) after the power is turned on.) sOperation Current Waveform Examples Stationary waveform A 0 A B 0 B Time Start Torque-up waveform at start A 0 A B 0 B Time Leading phase waveform at acceleration A 0 A B 0 B Time These three types of waveforms can all be set with a serial signal. SLA7042M/SLA7044M 47 |
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